Custom Software Development Agencies in Spain

Galadrim is a boutique development agency with offices in Madrid and Barcelona. It was co-founded by two Ecole Polytechnique graduates with backgrounds at IBM, Facebook, and Microsoft. The agency targets mid-to-large enterprises and has delivered projects for Bandai Namco, Clarins, Decathlon, Carrefour, and Volkswagen. Services span a broad stack: React, Node.js, Angular, Python, Flutter, and .NET. Galadrim offers AI and machine learning services including computer vision and predictive systems. The team engages directly with clients, without intermediaries. For startups and early-stage teams, the agency's enterprise scale and overhead are likely more structure than a small project needs. For large organizations with defined requirements, it is well-suited.

SEIRO is a software studio founded in 2025 that builds custom software products, MVPs, and internal tools. Every project is led directly by founder Xavier Lopez Reynau. SEIRO states two differentiators. First, it optimizes for client success rather than revenue maximization, which it says shapes how it scopes and staffs projects. Second, its engineers use AI throughout development at a depth that goes beyond standard tooling; AI is integrated into the engineering workflow, not treated as a separate service. For custom software projects, SEIRO runs a pre-build phase called the SEIRO Launch Blueprint to align scope, budget, and technical decisions before coding begins. This process applies to custom software and MVPs, not to websites or e-commerce work. Clients include Agora, Delivery Mates, Electia, Roco, Sindi, Vibrant, and Zoom. Clients retain full code ownership at the end of every engagement.

Xerintel has been operating for 20+ years out of Jerez, Cadiz, with over 4,000 completed projects and a team of 40+ staff. Services cover mobile and web development, e-commerce, hosting, SEO, legal compliance, and branding. The agency holds a 4.8/5.0 rating across 600+ Google reviews. Xerintel is an authorized Kit Digital agent, meaning eligible Spanish businesses can access up to 12,000 euros in government subsidies through their services. Clients include IKEA, Toyota, Granada CF, and Cadena SER. The wide service catalog makes it a practical one-stop option for Spanish SMBs with varied digital needs.

Docastix is a native mobile app studio founded in 2024, based in Ourense, Galicia. It builds iOS and Android applications and positions itself on quality and delivery speed. The studio is early-stage with no public client track record at this time.

Desarrolloapps operates under a single brand with offices in Madrid, Barcelona, London, and New York. All consultants hold MBA degrees. The team reports advisory experience across 2,300+ startups and companies. Services focus on mobile app development: Android, iOS, Flutter, and wearables. The Madrid operation also offers staff augmentation and an in-house push notification server. Client relationships of 8+ years and free quotes with a 48-hour response commitment are highlighted on both sites.

ABAMobile is a Spain-based enterprise mobile agency with 13+ years of experience. Its focus is IoT and NFC integration alongside standard mobile development. Services include custom app development, multiplatform solutions, connected devices, and ongoing maintenance. The agency's track record is specific to mobile products that interface with physical hardware or connected infrastructure.